my son just started going to the potty and I was wondering the same thing! I've been using Purell - I don't know why i didn't think about spray cleaner with bleach!
she just may not be ready for the potty. Just keep it out and let her go on it when/if she wants to. Forcing it may make her want to do it less! My daughter is 2 1/2 and still has no interest in the potty!